The Library is currently in the process of being upgraded from Oracle Database Version 12.1.0.1 to
12.1.0.2. Demos are being upgraded to reflect the new Container paradigm as well as EBR (Edition Based Redefinition) and may contain
references to CDBs, PDBs, and other objects you may not be familiar with such as CDB_OBJECTS_AE: Welcome to 12c.

The four functions included in the package use different methods to compare a source string and destination string,
and return an assessment of what it would take to turn the source string into the destination string. This functionality is defined as a stand-alone package header compiled with PRAGMA INTERFACE(c....

Instead of simply calculating the number of steps required to change the source string to the destination string,
determines how closely the two strings agree with each other and tries to take into account the possibility of a data entry error